Our 3-piece Boxed Alcohol Flask and Matching Pen and Keychain sets make an ideal gift. Alcohol flasks are made from premium 304 (18/8) food grade stainless steel that is soldered at the joints and provides a pleasant, leak and rust free drinking experience. Pens and Keychain are made of polished chrome and are covered in PU leather. All flasks are BPA free and only use high quality food grade 304(18/8) stainless steel. Your stainless steel flask is specifically designed to carry alcoholic drinks. It should not be used for beverages with acidic content such as fruit juices and cordials. Always empty the flask after use and rinse before refilling. Do not keep alcohol in the flask longer than 3 days. Refill only when you are about to use the flask.